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660 Diamond Bar Blvd Diamond Bar, CA 91765-1008

OFF-MARKET Office buildings Google Maps
25,864 SF 1.42 ac lot Built 1982
Entity Owned Absentee Owner ~ Est. High Equity
Estimated value (blended)
$5.59M
Range $5.03M – $6.15M (±10%)
Property ID US09-1109890

Property summary

AI-generated overview

This exceptional 1,977 square foot executive office condo, located at 660 N Diamond Bar Blvd, Suite 128, Diamond Bar, CA 91765, presents a unique owner-user opportunity. Priced at $798,000 ($28.65/sq ft), this Class B property boasts a prime location in Los Angeles County, offering convenient access to the 60/57 freeways. Situated within a two-story building constructed in 1982 and extensively renovated between 2014 and 2015, the suite features a highly versatile layout including two large rooms, a tea/coffee bar, and three individual offices. High-end solid maple doors and upgraded sound insulation enhance the professional atmosphere. The suite benefits from first-floor access, providing both front and back entrances, along with security cameras and access to common area bathrooms and a spacious lobby. The property includes 125 parking spaces and is situated on a 1.42-acre lot, zoned LCCM. The building features a modern grand lobby and updated restrooms, ample parking with handicap access, and an attentive management company. This is an ideal space for a smaller company seeking to own its premises, offering a blend of modern amenities and convenient location. The property's multi-tenancy structure and friendly tenant/owner community further enhance its appeal.

Property profile

Verified
Property type Office buildings
Use group OFFICE BUILDING
Year built 1982
Total area 25,864 SF
Lot 1.42 ac (61,880 SF)
Zoning code LCCM*
APN 8706-002-025
UPID US09-1109890

Cap rate & NOI

Priority signal for investors
Implied cap rate, NOI & suggested price
Cap rate vs submarket · NOI estimate · 3 price anchors

Value estimations

Realmo proprietary · 4 methods
AI Approach AI
by Request
CAP Approach CAP
$6.85M
Comparable Approach Comparable
$3.76M
Blend (final) Blend
$5.59M

Owner & transaction history

since 2025
7 recorded transactions
2025
$725,000
2025
Price N/A
2025
$426,500
2024
Price N/A
2024
$708,000
2023
Price N/A
2022
Price N/A

Zoning & alternative use

LCCM* · Diamond Bar, CA

Comparables

6 recent transactions · within 1.5 mi
Comparable in this city
6 recent transactions
Recent comparable sales
Sale price & price/SF · Sale date & distance · Adjustments & confidence
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